Red Tail Boa Feeding problems

[godzilla]

it's 9 years old and 6 feet+
i don't know how often the old owner fed her but i was going to every other week. the old owner told me to take water out of her cage because it was filling her up. which i think is total BS.
I talked to the vet and she said she could go a year without eating if she wanted to
and no she still has access to water in her cage
glass tank screen lid. coconut bedding. and she's never in her hides.
the reason the tank drops that low at night is because my house gets colder and its harder to keep heat higher than 80 but it usually stays around 80

you may have been overfeeding also. i was talking to someone just a day or two ago whose BCI would not eat for almost 2 months and finally it did and she thinks it could be in part of eating too much. how often do you feed it? what is its' age and size?